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    The Exploratorium
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    This is an online exhibit about color perception. Learners set a random background color and then try to mix red, blue, and green light to match. Although this is a perception activity, it also...

    free Ages 6 - 18 5 to 10 minutes
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    The Exploratorium
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    This activity shows learners (with adult supervision) how to make a Glitter Globe, a fabulous toy that shimmers when you shake it. The ingredients of the Globe--rubbing alcohol, vegetable oil, and...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    This is an online activity where learners can virtually mix different colors of light or paint (you can switch between them) and see how the colors combine. It demonstrates how millions of colors...

    free Ages 6 - adult 5 to 10 minutes
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    American Chemical Society
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    Learners add different liquids (water, salt water, alcohol, and detergent solution) to water and observe the different ways the different liquids combine with water. The liquids are colored yellow...

    $1 - $5 per group Ages 6 - 14 30 to 45 minutes
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    Oregon Museum of Science and Industry
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    In this activity (on page 2 of PDF), learners mix oil and water. Then, they add soap and observe what changes! The activity demonstrates how oil and water don't mix, except when soap is added....

    1 cent - $1 per student Ages 4 - 11 Under 5 minutes
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    American Chemical Society
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    In the related activity called "Colors Collide or Combine," learners are intrigued by the apparent "line" that forms where colors from M&M coatings meet but do not mix. In...

    1 cent - $1 per group Ages 8 - 14 30 to 45 minutes